the402 x402 endpoint directory

Validate and normalize a phone number with full Google libphonenumber metadata: strict validity against each national

Render CommonMark + GFM markdown to HTML.

Convert JSON to YAML.

Search recent public posts across OPEN social networks - Bluesky, Hacker News and Mastodon - in one call: author, text

What happened to my transaction? Status, block, gas used, fee paid - and if it failed, the revert reason in plain text

Returns the raw public trade tape for a pair.

Reads the receipt of a transaction on Ethereum, Base, Base Sepolia, OP Mainnet, Arbitrum One, Polygon PoS or Avalanche

Generates a PNG QR code URL for payment payloads.

Extract page metadata: title, description, keywords, author, published/modified dates, canonical, language, favicon, a

Get recent social media posts from a person

ForgeKit screenshot (URL or HTML → image)

Access to live crypto market data

Polymarket prediction-market listings. Query: ?limit=1-100. Source: Polymarket Gamma API (free).

Find articles written by or mentioning a person

UOS Genesis machine utility: entropy_score

UOS Genesis machine utility: html_to_text

Chainlink Oracle Price

Answers the timing question an agent has before it schedules anything against a regulated exchange: is the main sessio

Fetch a file's contents from a GitHub repository at a given ref.

Generate a summary of a given text using the GLM chat model.

Report the ground resolution (metres per pixel, for 256-px tiles) and the OGC map scale denominator at a zoom level, o

Compute the geographic bounding box (west/south/east/north in degrees) of a slippy-map tile z/x/y, plus its Bing quadk

Map a WGS84 coordinate at a given zoom (0..30) to its slippy-map (XYZ / Google / OSM) tile x,y and its Bing quadkey.

Un-project Web Mercator (EPSG:3857) easting/northing in metres back to WGS84 longitude/latitude in degrees.

Project WGS84 longitude/latitude (degrees) to Web Mercator (EPSG:3857) easting/northing in metres. Latitude is clamped

Convert an MGRS grid reference back to decimal lat/lon on WGS84 (the coordinate of the grid cell's south-west corner a

Convert decimal lat/lon to a Military Grid Reference System (MGRS) string on WGS84. Precision is the number of digits

Convert a UTM coordinate (zone, hemisphere, easting, northing) back to decimal lat/lon on WGS84.

Convert decimal lat/lon to a UTM coordinate (zone, latitude band, hemisphere, easting, northing) on WGS84, including t

Parse a coordinate string into decimal lat/lon. Accepts a plain decimal pair ('40.4462, -79.9822') or DMS with hemisph

Convert a decimal-degree latitude/longitude to degrees-minutes-seconds, with hemisphere letters and a formatted string

Compute the calendar breakdown (years, months, days, hours, minutes, seconds) between two ISO 8601 dates/date-times, p

Add an ISO 8601 duration to a start date or date-time and return the resulting UTC instant. Calendar-aware: months and

Render an ISO 8601 duration as an English phrase, e.g. 'P1Y2M' → '1 year and 2 months'. Components are shown in descen

Assemble an ISO 8601 duration string from individual components (years, months, weeks, days, hours, minutes, seconds)

Parse an ISO 8601 duration such as 'P1Y2M10DT2H30M' into its components. Returns a normalized ISO string and totalSeco

Report whether two tokens sound alike under a chosen algorithm (soundex, metaphone or double-metaphone; default double

Encode a word with Double Metaphone, returning a primary and a secondary code to capture alternate pronunciations (use

Encode a word with the Metaphone algorithm — more accurate than Soundex for English pronunciation.

Encode a word with the classic Soundex algorithm (letter + 3 digits) for phonetic matching of names.

Encode a coordinate to a geohash and return its bounding box and 8 neighbors.

Distance and initial bearing between two coordinates.

Takes a chain key and a contract address, or one of a short list of globally unambiguous symbols. A symbol that is not

A stateless rule check for agents that pay for x402 endpoints. You supply the proposed payment, your policy and the am

Returns the visible order book of Binance, Coinbase, Kraken, OKX or Bybit for one BASE/QUOTE pair. Levels come as [pri

Reads the public perpetual data of Binance USDⓈ-M Futures, Bybit linear and OKX swaps for one BASE/QUOTE pair. Settlem

Reads one transaction hash on Ethereum, Base, Arbitrum, Optimism, Polygon or BNB Smart Chain and answers the question

A symbol is not an identity. Dozens of contracts carry the symbol USDC and most of them are not the one anyone means.

Reads the fee history of the last 20 blocks on Ethereum, Base, Arbitrum, Optimism, Polygon or BNB Smart Chain and retu

A stateful duplicate check for agents that settle x402 payments. Supply any of payment_id, payload_hash and nonce; eac